void speech_synthesizer::send_message(const tts_message& msg)
{
threading::lock message_lock(message_mutex);
if(status!=status_empty)
return;
current_message=msg;
status=status_message;
message_available.signal();
}
bool speech_synthesizer::get_message(tts_message& msg)
{
threading::lock message_lock(message_mutex);
if(status==status_stopped)
return false;
while(status!=status_message)
{
message_available.wait(message_mutex);
if(status==status_stopped)
return false;
}
msg=current_message;
status=status_empty;
return true;
}
void speech_synthesizer::signal_stop()
{
threading::lock message_lock(message_mutex);
status=status_stopped;
message_available.signal();
}
/*
* Handles asyncronous read operations
* - sets message_ from server(s)
* - removes any disconnected servers
*/
void Communication::ReadHandler(const boost::system::error_code& error,
std::size_t bytes_transferred,
boost::shared_ptr <boost::array<char, 30> > buffer,
boost::shared_ptr <std::string> server_name,
boost::shared_ptr<boost::asio::ip::tcp::socket> soc)
{
com_mutex_.lock();
// successful read
if (bytes_transferred == 30)
{
boost::mutex::scoped_lock message_lock(message_mutex_);
// let an unread message be read
while (!is_picked_message_)
{
getting_message_condition_->wait(message_lock);
}
// write message_ from buffer
message_ = buffer->data();
message_ = message_.substr(0, 30);
// clear the read buffer
buffer->assign(0);
is_picked_message_ = false;
is_set_message_ = true;
setting_message_condition_->notify_one();
// async_read next message on this server
boost::asio::async_read(*soc,
boost::asio::buffer(*buffer, 30),
boost::bind(&Communication::ReadHandler,
this,
boost::asio::placeholders::error,
boost::asio::placeholders::bytes_transferred,
buffer,
server_name,
soc));
}
else // server is disconnected and will be removed
{
out_mutex_.lock();
std::cout << "\n[" << boost::this_thread::get_id()
<< "] << " << *server_name << " is now disconnected \n" << std::endl;
out_mutex_.unlock();
// close this socket
soc->close();
for (unsigned i=0; i<sockets_.size(); i++)
{
// find the closed socket
if (!sockets_[i]->is_open())
{
// try to reconnect to this server
std::vector<Connection> disconnected_server;
disconnected_server.push_back(connections_[i]);
Connect(1, disconnected_server);
// erase all server related elements
sockets_.erase(sockets_.begin()+i);
servers_.erase(servers_.begin()+i);
buf_.erase(buf_.begin()+i);
is_reading_.erase(is_reading_.begin()+i);
break;
}
}
// check if all servers are disconnected
if (sockets_.size() == 0)
{
// report for waiting on <RETURN> keystroke
NoServerReport();
}
}
com_mutex_.unlock();
}
